Same way here. I try and pick up every day and make sure things look half way decent. On the weekends we have our big cleaning day. We clean floors, vacuume, tub, bathroom, laundry, bedroom.

When my mom was here the last week, we got on ladders and was cleaning. She runs her finger across everything and will turn and look at me and say "see all that dust?" I just smile and hand her a towel. I figure if she wants to nit pick she can clean it then. She hasn't ever cleaned it but I think she gets the hint that I don't like her complaining about a little bit of dust.